The McLaren Elva was built for the track. While it had an aerodynamic design, it lacked a key road-going component: a windshield. This latest release remedies that. It still lacks windows or a roof but adds only 44 pounds to the car's weight, including rain-sensing wiper blades and washer jets. Removed is the Active Air Management system; the 804hp, twin-turbo V8 engine remains.